It is of great importance to the planning, scheme design and comprehensive control of fully mechanized coal caving face that three-dimensional graph technology is applied to simulate the production process in the coal caving face. Taking Delphi 6.0 and OpenGL as the development tool, this paper applies computer simulation technology to establish the models of the coal caving face and shearer, so as to implement the programmable visualization simulation of the production process in the coal caving face, as well as introduces the establishment of the models and the realization of the simulation system.